How to test whether the files are existed or not

[md.jahidanwar]

Dear Rpgubba,
Q. As u told echo $? ,If u want to write a filename instead of "?"

That means u write like echo $filename

It is not an error but it is take as a variable not a take filename.

For instance
echo $filename hello how ru
the o/p is hello how ru

[prakash.kudrekar]

I thnk the command goes like this

#echo $filename
where filename is the one which u want to search for???

regards
Prakash